Residents of Ilocos Sur will experience a six-hour power outage on Friday. According to the National Grid Corp. of the Philippines (NGCP), parts of Ilocos Sur may expect a six-hour power interruption from 6 a.m. to noon. on Friday. Affected is the Ilocos Sur Electric Cooperative (ISECO) Candon Substation that services the areas of San Esteban, Santiago, Candon, Banayoyo, Sta. Lucia, Galimuyod, Tagudin, Salcedo, Sta. Cruz, Suyo, Sigay, Quirino, San Emilio, Gregorio del Pilar, Alilem, Cervantes, Lidlidda, and parts of Sugpon, Ilocos Sur. This will pave the way for the replacement of three wood poles after being toppled by strong winds from Tropical Storm Mario (Fung-Wong).